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Inventory (Unaudited) (Tables)
3 Months Ended
Mar. 31, 2026
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current [Table Text Block]
$ in millionsMarch 31, 2026December 31, 2025
Raw materials$318 $306 
Work in process1,062 945 
Finished goods70 58 
Inventoried costs, net$1,450 $1,309